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4 Written Questions

3 Multiple Choice Questions

  1. wolf
  2. allows us to indirectly date fossils up to billions of years old based on minerals in surrounding volcanic strata
  3. Ivy leaf and pine needle

3 True/False Questions

  1. Why do some scientists believe that RNA, rather than DNA, was the first genetic material?

    All the proto-cells on early Earth contained RNA.
    RNA has both information storage and catalytic properties.
    RNA could have evolved into DNA.
    RNA can replicate more accurately than DNA.
    RNA contains uracil in place of thymine
    RNA has both information storage and catalytic properties.

          

  2. Evolution works by _____.

    "tinkering" with existing structures
    predicting the future
    molding the environment to conform to the organisms living in it
    constantly increasing complexity
    converging on a particular phenotype
    "tinkering" with existing structures

          

  3. Earth probably formed _____ years ago, and the first life evolved as early as _____ years ago.
    .
    4.5 billion years ago ... 3.9 billion years ago
    Humans observed neither event, so there is no way to tell.
    6,000 years ago ... 6,000 years ago
    3.9 million years ago ... 2.0 billion years ago
    10 billion years ago ... 4.5 billion years ago
    allows us to indirectly date fossils up to billions of years old based on minerals in surrounding volcanic strata

          

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